one of my clients is running his EcoStar at 1,500 rpm 18hrs per day and is costing him $380 per yr.
How much wattage per hr does a Hayward Super 2 pump use?
- Thread starter Aquatica
- Start date
if you install an ecostar below the pool I believe its worth it. especially is you have a large pool. more volume of water. more flow rate intially. can run ecostar at a lower rpm..save more money. right?
- May 3, 2007
- 16,964
- Pool Size
- 20000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
In terms of performance it doesn't matter if you install it below or above the water line. The net elevation change is always zero because the pump needs to return the water to the same level from which it got it so net static head is zero. However, when the pump is below the water line, you need extra valves to prevent draining the pool which creates more head loss.
mas985 said:
huh wow now you got me stumped! I thought the extra weight of the water would help aid flow rate and I could turn down the rpm. I mean I got a pool way below and under. right now the filter psi is 35 and thought maybe an ecostar running a lower rpm would decrease the filter pressure.
Filter pressure varies with pump speed and with the height of the filter relative to the water level in the pool. Filters below water level have a higher pressure than filters above water level.
The weight of the water helps water going down, and hurts water going up. Those two cancel out because the pump/filter is a closed system and the water always travels the same distance up as down.
The weight of the water helps water going down, and hurts water going up. Those two cancel out because the pump/filter is a closed system and the water always travels the same distance up as down.
JasonLion said:
Ah thanks Jason for explaining. That make sense. But I think we can still keep prime and keep flow rater at lower rpm so swg's and heat pumps work. that was my thinking.
however most people now I am recommending dual speed pumps as they can pay themselves off in 1 - 1.5 yrs.
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